Pipe pressure drop
Thread Content
For the inlet pipes of a system, it is important to determine an appropriate pressure drop across these pipes; after all, choosing a pipe diameter that is too large results in material waste and increased costs； On the other hand, choosing a too small diameter for the pipe will result in excessive pressure drops, leading to energy waste and affecting the operational efficiency of the process. In my opinion, it is sufficient to keep the pressure drop per meter below 0.5 KPa. What do you all think?
Determined based on the requirements of the process unit, as well as the supply pressure and transfer length
Is it too big? At 200 meters, 1 kilogram is gone. Under this resistance, your flow rate will be very high. Usually, the flow rate of the medium also needs to be controlled. In principle, an analysis and comparison of energy consumption and investment should be carried out on the basis of meeting relevant standards, though it is not easy to do so.
The pressure drop is not the only controlling parameter for diameter selection. There are many control parameters: such as the pressure drop allowed by the process requirements (some require a very low pressure drop, such as in vacuum tubes) ； Medium flow rate limitation (for some materials, the flow rate cannot be too high, such as in oxygen pipelines). For ordinary material pipelines, when the requirement for pressure drop is not high, it can be determined through comprehensive consideration as suggested by the poster. Personal opinion